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Topic: Using preem in a flower bed. (Read 294 times)

I've got a flower bed that I've string trimmed and hoed to get rid of weed but the weeds come back in a week. After I clean it up again can I use Preem to keep the weeds down. Does it do anything to keep perennial weeds from coming back.

Dwight, My understanding is there is 2 versions/formulations of Preem. 1 is an organic approved which is corn Glutton, The other has other chemicals mixed in. It retards seed germination but not plant growth. It will impede the growth of weed and certain plant seed development but I do not think it will affect weed development that has already germinated. It might interfere with flower seed germination. I would read the bags of both versions and ask your agent at the local extension office. You can purchase corn glutton at some feed/seed stores. Given the weather we have had already you weed problems and question is going to be a popular topic of conversation for gardeners too.

I use Preem, when I remember to put it out. It does help with the weeds and the way I understand it, is when you clean your bed and then put it out and water it in. It gives off a gas that stops the seed from germinating.

I have used both varieties and the organic didn't work but for maybe two weeks. The original Preen works well for several months for me. I rake back the mulch, pull existing weeds and rake the Preen into the topsoil. After that I mulch heavily (3"-4")